We currently monitor two 2016 clusters and have noticed that the CSV's on both clusters report IOPs in the 000's whereas a quick tally of VM IOPS shows only 100-150 IOPS which is backed up by the volume performance data on the SAN.

We monitor the cluster with Veeam One. Veeam One reports IOPS in the 000's for the CSV's whereas the SAN and also a tally of IOPS from the individual VMs from within Veeam One shows IOPs in the 100-200 range for the same CSV. It looks like the IOP counter in Veeam One for the CSV is off by a large factor.